John Mayer could not be reached for comment, but I’m just going to go ahead and assume his answer would’ve been, “Jennifer, who?”  Star reports:

Jennifer Aniston had a dinner date with hunky Brit movie star Gerard Butler. But her on-again beau John Mayer shouldn’t worry — it was strictly business.
On Wednesday night, Jen and Gerard — who got flirty after meeting at the Toronto Film Festival in September — had dinner with director Andy Tennant at one of Jen’s favorite Los Angeles nightspots — the Tower Bar at the Sunset Tower Hotel.
“Jennifer, Gerard and Andy had a 2 hour dinner at approximately 9pm,” an observer tells Star. “They enjoyed a lovely dinner and drinks while talking about a future project. Jennifer was enjoying a glass of white wine

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If Gerard did not answer every question with, “This is Sparta,” this date was massively disappointing.  Also, Jennifer should’ve probably been topless.  Ya know, to keep with Ancient Greek customs, and anything else I can make up that will result in Jennifer’s boobs being out amongst the citizens.